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Snake-shaped micro-channel radiator for laser long-strip-shaped crystal

A micro-channel, strip-type technology, applied in the direction of lasers, laser parts, laser parts, etc.

Active Publication Date: 2021-04-09
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing heat sink structure cannot satisfy these conditions at the same time.

Method used

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  • Snake-shaped micro-channel radiator for laser long-strip-shaped crystal
  • Snake-shaped micro-channel radiator for laser long-strip-shaped crystal
  • Snake-shaped micro-channel radiator for laser long-strip-shaped crystal

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments disclosed in the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041]One of the core ideas of the present invention is to provide a snake-shaped micro-channel heat sink for laser long crystals, including: laser long crystals and two sets of snake-shaped micro-channel heat sinks with the same structure on the upper and lower sides. The upper and lower sides of the strip-shaped crystal are respectively combined with the bottom heat-absorbing surfaces of two sets of snake-shaped micro-channel radiators; the snake-shaped micro-channel radiator has a two-layer structure, including a micro-channel layer and a cover layer; inside the micro-channel layer there are multiple Snake-shaped micro-channel structure; the cover layer is provided with an inlet header and an outlet header, respectively providing the...

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Abstract

The invention discloses a snake-shaped micro-channel radiator for a laser long-strip-shaped crystal. The snake-shaped micro-channel radiator comprises the laser long-strip-shaped crystal, an upper snake-shaped micro-channel radiator and a lower snake-shaped micro-channel radiator, wherein the upper snake-shaped micro-channel radiator and the lower snake-shaped micro-channel radiator are the same in structure. The upper surface and the lower surface of the laser long-strip-shaped crystal are respectively combined with the bottom heat absorption surfaces of the two groups of snake-shaped micro-channel radiators; the snake-shaped micro-channel radiator is of a two-layer structure and comprises a micro-channel layer and a cover plate layer. The fluid working medium is overlapped with the laser long-strip-shaped crystal heat dissipation area for multiple times in the flowing direction, and the overall heat dissipation power is high. In the width direction of the laser long-strip-shaped crystal, the flowing directions of fluid working media in the upper snake-shaped micro-channel radiator and the lower snake-shaped micro-channel radiator are in a mutual countercurrent mode. In the length direction of the laser long-strip-shaped crystal, the flowing directions of fluid working media in the upper snake-shaped micro-channel radiator and the lower snake-shaped micro-channel radiator can be the same-direction forward flow type or the opposite reverse flow type, and the temperature uniformity in the long-strip-shaped crystal is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of laser application, and in particular relates to a serpentine microchannel heat sink used for laser long crystals. Background technique [0002] In solid-state lasers, strip-shaped crystals are often used as gain media. The pump light spot is incident on the narrow end face of the crystal, and a large amount of heat is generated in the crystal when the pump light passes through the crystal. The absorption of the pump light by the crystal generally decays exponentially. Therefore, there is a high local heat flux density in the crystal, and there is a large temperature gradient distribution along the direction of light transmission. Even with double-ended pumping, the internal temperature of the crystal is still higher at both ends and lower in the middle, presenting a parabolic distribution state. [0003] Crystal thermal effect is a key factor restricting laser power and beam quality. As the laser powe...

Claims

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Application Information

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IPC IPC(8): H01S3/04H01S3/042
CPCH01S3/0407H01S3/042
Inventor 王庆功姚伟毛叶飞
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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